Due to the short range of the wifi, that isnt normally an issue, you would only have the wifi on for short periods unless IPCam mode, and unless used as an ipcam out in the wild, when you would need a usb battery pack, #
for ipcam use you would normally have it mains powered and connected as client to your router, in which case it couldnt be accessed unless someone could get on to your router, so fine for IPCam use
IPCam use is a recent feature, please elaborate and I will be happy to help...